Electronics-Basics on AddOhms by Bald Engineer

How Voltage Dividers Work | #13

Fri, 16 Jan 2015 21:04:12 +0000

Understanding voltage dividers means understanding Ohm’s Law. A common use for a voltage divider in most projects is to monitor a battery. Say you are powering your circuit with a 9V or 12V battery. Microcontroller boards don’t do well with those voltages.

In a future video, we’ll come back and look at more circuits that can use voltage dividers.

Episode Notes

Correction: There is a mistake around 3:00. I say “91 millivolts” and I should have said “910 millivolts!”

Analog and Digital, what are they? | #6

Sun, 20 Oct 2013 22:52:55 +0000

https://youtu.be/WxJKXGugfh8

We live in a world of analog. Clocks are a great example of how time is continuously changing with nearly infinite precision. However, when you look at a digital clock, there are very specific “digits”. (Get it? Digital… Digits…) Using the analogy of clocks, this TutorialCast explains the basic difference between Analog and Digital Electronics. It ends with a slight twist.

Links mentioned in video:

AddOhms Episode 5: /ac-vs-dc
Adafruit ADXL377 Breakout board: http://www.adafruit.com/products/1413
Arduino (In case you need it): http://www.arduino.cc

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What is the difference between AC and DC | #5

Wed, 25 Sep 2013 01:49:33 +0000

https://youtu.be/vN9aR2wKv0U

After learning the difference between Voltage, Current, and Power in Episode 4, now we look at a little bit closer type of voltage. The “C” in “AC” and “DC” stands for “Current.” However, people will commonly say “My home has 120 (or 240) Volts AC.” What the heck? How can AC mean Current and Voltage?

This video, we break it down the differences with some simple examples.

Voltage, Current, Power and understanding their differences | #4

Sun, 14 Jul 2013 04:01:34 +0000

https://youtu.be/lYZUXV-v71Y

Simplified explanation definitions of Voltage, Current, and Power. These basic electronic terms are all related but have different, specific meanings. This plain-language explanation will help you understand how to use them.

This early video had some issues with how I presented concepts. At some point, I’d like to come back and re-do it. (It is unlisted on YouTube.)